Add CdmWrapper to support multiple CDM versions in CdmAdapter.

third_party/widevine/cdm/widevine_cdm.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'widevine_cdm_version_h_file%': 'widevine_cdm_version.h',
     'widevine_cdm_binary_files%': [],
     'conditions': [
       [ 'branding == "Chrome"', {
@@ skipping 47 matching lines @@
             '<(DEPTH)/ppapi/ppapi.gyp:ppapi_cpp',
             'widevine_cdm_version_h',
             'widevine_cdm_binaries',
           ],
           'sources': [
             '<(DEPTH)/media/cdm/ppapi/api/content_decryption_module.h',
             '<(DEPTH)/media/cdm/ppapi/cdm_adapter.cc',
             '<(DEPTH)/media/cdm/ppapi/cdm_adapter.h',
             '<(DEPTH)/media/cdm/ppapi/cdm_helpers.cc',
             '<(DEPTH)/media/cdm/ppapi/cdm_helpers.h',
+            '<(DEPTH)/media/cdm/ppapi/cdm_wrapper.h',
             '<(DEPTH)/media/cdm/ppapi/linked_ptr.h',
           ],
           'conditions': [
             [ 'os_posix == 1 and OS != "mac"', {
               'cflags': ['-fvisibility=hidden'],
               'type': 'loadable_module',
               # Allow the plugin adapter to find the CDM in the same directory.
               'ldflags': ['-Wl,-rpath=\$$ORIGIN'],
               'libraries': [
                 # Copied by widevine_cdm_binaries.
@@ skipping 50 matching lines @@
       ],
       'copies': [{
         # TODO(ddorwin): Do we need a sub-directory? We either need a
         # sub-directory or to rename manifest.json before we can copy it.
         'destination': '<(PRODUCT_DIR)',
         'files': [ '<@(widevine_cdm_binary_files)' ],
       }],
     },
   ],
 }